118330191918 has 24 divisors (see below), whose sum is σ = 256388862600. Its totient is φ = 39442354224.

The previous prime is 118330191877. The next prime is 118330191953. The reversal of 118330191918 is 819191033811.

It is a happy number.

118330191918 is a `hidden beast` number, since 118 + 330 + 19 + 191 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 941473 + ... + 1059731.

It is an arithmetic number, because the mean of its divisors is an integer number (10682869275).

Almost surely, 2^118330191918 is an apocalyptic number.

118330191918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

118330191918 is an abundant number, since it is smaller than the sum of its proper divisors (138058670682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

118330191918 is a wasteful number, since it uses less digits than its factorization.

118330191918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173856 (or 173853 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 45.

The spelling of 118330191918 in words is "one hundred eighteen billion, three hundred thirty million, one hundred ninety-one thousand, nine hundred eighteen".